EASY
CAT
IMPORTANT
Earn 100

Two filling pipes can fill a cistern in and minutes, respectively, and they can together fill it in minutes. The waste pipe can empty the full cistern in
(a) minutes
(b) minutes
(c) minutes
(d) minutes
(e) minutes

50% studentsanswered this correctly

Important Questions on Pipes and Cistern
EASY
CAT
IMPORTANT
A tank has a leak which would empty it in hours. A tap is turned on which admits a minutes into tank, and it is now-emptied in hours. The capacity of tank in litres will be

EASY
CAT
IMPORTANT
Two pipes A and B can fill a tank in minute and minutes, respectively. If both the pipes are opened simultaneously, then after how much time should Abe closed so that the tank is full in minutes?

EASY
CAT
IMPORTANT
Two pipes A and B can fill a tank in minutes and minutes, respectively, but a third pipe C can empty it in minutes. The first two pipes are kept open for minutes at the start and then pipe C is also opened. The cistern will be emptied is

MEDIUM
CAT
IMPORTANT
Two pipes A and B can fill a tank in and hours respectively. Pipe B alone is kept open for of the time and both pipes are kept open for the remaining time. In how many hours will the tank will be full?

EASY
CAT
IMPORTANT
Three pipes A, B and C can fill a cistern in hours. After working at it together for hours, C is closed. Now A and B require hours more to fill it. Then C alone will empty it in

EASY
CAT
IMPORTANT
Two pipes X and Y can fill a cistern in minutes and minutes, respectively. If both the pipes are opened together, then after how much time (in minutes) should Y be closed so that the tank is full in minutes?

EASY
CAT
IMPORTANT
Having the same capacity, taps fill up a water tank in minutes. How many taps of half the capacity are required to fill up the same water tank in minutes?

EASY
CAT
IMPORTANT
Three pipes P, Q and R can separately fill a cistern in and hours, respectively. Another pipe Scan empty the completely filled cistern in hours. Which of the following arrangements will fill the empty cistern in less time than others?
